Basic functions
The following functions may be triggered individually or together in critical driving situations, e.g. in the event of
emergency braking, understeer and oversteer or minor collisions:
—Reversible belt tensioning of the fastened driver and front passenger seat belts.
—Automatic closing of the glass roof and side windows down to a gap, depending on the vehicle equipment.
The belts may be tensioned individually or together depending on the respective critical driving situations.
Additional functions for vehicles with Autonomous Emergency Braking (Front Assist)
For vehicles with Autonomous Emergency Braking(Front Assist), the system limits also include calculation of the
probability of a rear-end collision with the vehicle in front. If the system detects that a rear-end collision is likely, or
initiates severe braking, it can trigger the proactive occupant protection system.
Additional functions for vehicles with lane change system (Side Assist)
In vehicles fitted with a lane change system(Side Assist), the probability of a collision with the vehicle following
behind is also calculated within the system limits. The system can trigger the proactive occupant protection system if
it detects a probable collision with the vehicle ahead. If the risk of a collision is detected, the hazard warning lights
can also be activated with a rapid hazard warning flashing frequency in addition to the basic function of the proactive
occupant protection system.
Additional functions for vehicles with Emergency Assist
The proactive occupant protection system may be triggered in vehicles with Emergency Assist if no driver activity is
detected.
Depending on the activation level, the following functions are triggered:
—Reversible belt tensioning of the driver's fastened seat belt for a brief or extended period of time.
—Automatic closing of the glass roof and side windows down to a gap, depending on the vehicle equipment.
Setting in driving profile selection
In vehicles with driving profile selection, the proactive occupant protection system is adapted to the special vehicle
setup of the respective driving profile.
Settings in the Infotainment system
Depending on the vehicle equipment, settings for the proactive occupant protection system with the full range of
functions can be made in the vehicle settings in the Infotainment system.
The proactive occupant protection system will be reactivated every time the ignition is switched on.
It may not be possible to operate the setting function if the proactive occupant protection system has already been
adapted to the specific vehicle setup.
Limits of the proactive occupant protection system
The availability of the proactive occupant protection system depends on country-specific legal regulations and the
vehicle equipment.
The proactive occupant protection system will not be available, or will only be available to a limited extent, in the
following situations:
—Malfunction in the ESC, reversible belt tensioners (→ Belt retractor, belt tensioner, belt tension limiter) or airbag
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